Index: include/winternl.h
--- include/winternl.h.orig	2008-09-05 17:28:27 +0200
+++ include/winternl.h	2008-09-06 09:45:18 +0200
@@ -22,6 +22,7 @@
 #define __WINE_WINTERNL_H
 
 #include <windef.h>
+#include <stdarg.h>
 
 #ifdef __cplusplus
 extern "C" {